Variety boring-machine.



Ro 733,115. RATRNTRD JULY 7, 190s.

M. L. ANDREW. VARIETY BORING MAGHINR.

APPLICATION FILED MAY 31, 1902.

2 SHEETS-SHEET 1.

N0 MODEL.

.vil lull Inventor Attrney PATENTED JULY 7, 1903.

M. L. ANDREW?. VARIETY BORING MAGENE.

APPLIoATroN rum) mu-1 19.02.

2 SHEETS-SHEET 2.

N0 MODEIA.

DD A0 tio. '733,1'15.

Patented July 7, 1903.

MosEsL. ANDREW, Aor DELHI, `onio.

. VARIETY BORING-'MACH'INi-z.

srncrrrcnrronforming part of 'Letters Patent No. 733,115, dated-July 7, 1903..

Application. led May 31, 1902. Serial No. 109.710. (No model.)

Figure 1 is a front elevation of a machine exe-mplifying my invention; Fig. 2, a verti- Acal section of the same in the plane of line b of Fig. l; Fig. 3, a vertical section of aportion of the machine in the plane of linefof Fig. 1; Fig. 4, a Vertical section of a portion of the machine inthe plane of 'line a, of Fig. l; Fig. 5, a perspective View of a portion of the table, showing the same in vertical transverse section in the plane of line c of Fig. 1;

Fig. 6,` a horizontal section of the boring-head 9 in the plane of line CZ of Figs/land 7; Fig. 7,`a vertical section of the boring-head 9 in the plane of offset line g of ,Fig. 6; Fig. 8, a perspective view of the boring-head l1; Fig. 9, a horizontal section of the boring-head 11 in the plane of line e of Fig. 1; Fig. 10, a horizontal sectionof the boring-head `10 in the plane of line e of Fig. l; Fig.11`, a plan of boring-heads 12 and 13,'and Fig. 12 a vertical section of boring-head 12 inthe plane of lines h of Fig. 11.

In the drawings, l indicates a column; 2,

a horizontal rail supported bythe top of the column and presenting a flat front face and having a central horizontal slot;-3, brackets projecting upwardly from the `ends of the rail 5 4, adrivingshaft mounted in` brackets 3, its axis being parallel with and forward of and above the rail; 5,'driving-pulleys on each end of this shaft; 6, a rod iXedly supported by the brackets 3, parallel with the drivingshaft; 7, a series ofbevel-gears splined upon the driving-shaft and having circumferentialgrooved hubs; 8, thrust-bearings engaging the grooves of gears 7 and adj ustably secured to rod 6; 9, 10, 11, 12, and 13, a series of bor- .the knee and provided. turning it by hand and serving as means for 20 andadjustable along the ing their upper surfaces lushwith the upiper surface of the table; 22, a `oted in the base of the column Yand forming a prolongation ingheads secured to the face of the rail and adjustable along the same and arranged to carry and give motion Vto downwardly-projecting boring-bits; 14, a vertical guideway onA the face of the column; `15, a knee mounted for sliding motion o n this. columnyl, a screw mounted on the column and engaging with mechanism forV the vertical adjustment of the knee upon the top; l7,"a table-stem mounted to slide vertically inthe forward portion of the knee; 18, the table, the same extending along under `the series of boring-heads and being united to table-stem' 17 by a horizontal pivot at ,right angles to the length of the table; 19, ldia, .,ronal `braces extending from the lower portions of the table-stem upwardly and outwardly into pivotal connection with the table and being pivotally connected with the tablestem at selective points in the length of the braces; 20, a longitudinal slot with undercut side Walls in the upper surfaces of the table,

the portion of the table forming the floor of this groove being of a skeleton or open form; 21, wooden blocks firmly fitting the groove same and havtreadle pivand projecting forwardly; 23, a rock-shaft journaled in the knee between the columnand the tablestem; 24g, a lever fast on this rockLsha'ft; 25, a link connecting theforwardend ofthis1ever with the table-stem; 26, arlink'extending upwardly from "the treadlegf', a screw connecting link 26 with the rear end'oflever24 of .link 26 and serving as a means bywhichthelength of the chain-link thus formed may be adjusted; 28, a rearwardly-projecting weighted lever fast on rock-shaft 23 and servingin connterbalancing the weight of the table and the work to any desired degree; 29, a forwardlyprojecting hand-lever fast onrock-shaft 23; 30, a vertical rod carried by the table-stem and Working through an eye in the knee; 31, a spring upon this rod and compressing between a collar thereon and the eye of the knee through which it works; 32, a pairof vertical rods, one at each end of therail,

IOO

Athrough them.

their lower ends resting on the floor' and their upperends engaging lugs on the rail, and 33 set-screws binding these rods in the lugs.

The work to be bored is placed upon the table and the table fed upwardly to the boring-bits, either by hand or foot. Spring 31 is adjusted to be compressed to a proper degree by the time the table has been lifted to the desired limit, so that when the boring is is done and the feeding pressure removed the spring will aid in producing the descent of the table and the workv and at the particular time whenthe clinging of the work to the bits is the greatest. It is to be understood that th'e table is to be provided with such work-gripping devices and such feed-stops as are usualin vertical boring-machines. With the table set as indicated in the drawings the boring will be done at right angles to the face of the table. By disconnecting the braces 19 and reconnecting one of them at a new point in its length the table may be swiveled on a horizontal axis, so that boring may be done at an angle to the face of the table. The open character of the central portion of the table at the groove 20 provides freedom for the dropping of the boring-chips, and the blocks 21 give proper table support to the work. The blocks 21'being adjustable along the length of the table may generally be set to positions between the bits so as not to interfere with the dropping of the chips; but, if necessary, they may be bored or mortised to permit the chips to fall The boring-heads are adjustable along the length of the rail, so that the borings produced by their individual spindles may be in adjustable relationship to each other. The motion is given to the boring-spindles through bevel-gears driven by the bevel-gears 7, which are splined to the driving-shaft, these gears 7 being adjusted along the driving-shaft to suit the selected positions of the boring-heads, and in thus adjusting these bevel-gears upon the drivingshaft the thrust-bearings 8 are appropriately adjusted upon the rod 6. Boring may be doneby all of the heads at once, or one or more heads may be thrown out of action by shifting the appropriate ones ofthe bevelgears 7 out of mesh with the gears which they drive. For light work the driving-shaft may receive its motion from the driving-pulley at o ne endvof the shaft, while for eXtra-heavy work the pulleys at both ends may be employed, thus avoiding the necessity for ernploying a very wide or tightly-strained belt at all times. The general support to the rail is of course given by the column; but the support of its ends is lreinforced by the rods 32. In setting up the machine the rail is allowed to take its natural position as determined by the column, after which the setscrews 33 are tightened upon the rods, thus giving the endsof the rail additional supports, adapting themselves to the inequalities of the Shop-Hoor.

gears 7 which is Of the boring-heads head 9 is adapted for' the production of a longitudinal :row of holes in fixed relationship to each other. Head 10 is adapted to bore two holes in a line at right angles to the length of the table, the distance between the holes being adjustable. Head 1l is adapted to bore two holes in a line parallel with the length of the table, the distance between the holes being adjustable. Head 12 is adapted to bore two holes a xed distance apart in a line either parallel with or at right angles to the table or at intermediate angles. Head 13 is adapted to bore a single hole at various points transverse to the length of the table. These various heads will now be described in detail.

Proceeding further with the drawings and giving special attention to Figs. 8 and 1, the construction of boring-head 11 is as follows: 34 indicates a saddle seating against the face lof the rail and gibbing under its bottom and over its top and adjustable along the rail; 35, an arm projecting therefrom parallel with the rail; 36, a boring-spindle journaled in the saddle with its axis in the vertical plane of that of driving-shaft 4, its lower end being provided with a bit-socket; 37, a bevel-gear fast on the upper end of this boring-spindle and adapted to be engaged by one of the 1 bevel-gears 7, splined upon the driving-shaft; '38,a pinion fast on the boring-spindle; 39,

a bracket sliding on arm 35 of the saddle and bolted thereto and having a bearingV for the l,second boring-spindle; 40, the second boring-spindle, journaled in the bearing of this bracket;\41, a pinion fast on boring-spindle 40 in the horizontal plane of pinion 38; 42, a segment mounted on bracket 39 and angu- Alarly adjustable centrally to boring-spindle 40; 43, an intermediate pinion carried by this segment and adapted to engage pinionsl 38 and 41, and 44 a bolt clamping the saddle to the rail. The saddle may be adjusted along the rail to bring boring-spindle 36 to the desired position, and then that one of bevelto drive it, together with its thrust-bearing, is to be'properly adjusted. Bracket 39 is then to be adjusted to the desired distance to give the desired distance between boring-spindles 36 and 40. Segment 42 is then to be angularly adjustedto bring its pinion 43, which constantly engages' pinion 41, into engagement with pinion 38. lf boring-spindle 36 alone is to be used, then intermediategear 43 may be thrown out of gear with pinion 38, thus avoiding the loss of power which would be due to the idle driving of boring-spindle 40. The entire boring-head may, if desired, be entirely removed from the rail in case it is not needed and its presence interferes with the proper relationship of the boring-heads at each side of it. This may also be said of all of the boring-heads upon lthe rail.

Boring-head 10 needs but brief description,

Vand reference may be had to Figs. 1, 2, and

10 of the drawings, in which 45 indicates the Ion iIo

ing-spindle; 48, the segment for' the intermediategear; 49, the main boring-spindle of the head, the same being in the vertical plane of the axis of the driving-shaft, and the second boring-spindle, journaled in bracket 47. The general description which has been given of boring-head 11 will apply in thepresent case, the only dierence being that in the present case the second boring-spindle is adjustable to and from the rail instead of parallel with it.

Boring-head 12 will be readily understood from Figs. 1, 11, and 12, in which 51 indicates the main boring-spindle, journaled in the saddle, as in the previous cases; 52, the bracket for the second boring-spindle, the same being mounted for oscillation upon an axis coinciding with that of spindle 51; 53, the second boring-spindle; 54, the intermediate pinion, carried by the bracket in Whichis journaled the second boring-spindle, there being no adjusting-segment for this gear in the present case; 55, a sleeve forming the lower bearing for spindle 51 and the lowerand clamping pivot uniting bracket 52 to the saddle of the head, and 56 a clamp-nut screwing on the lower end of this sleeve. Bracket 52 may be j, swung as desired to adj ust the second boringf spindle 53 in a portion of a circle about spindle 51 and then clamped by Vnut 56.

Boring-head 13 may be understood from i Figs. 1 and 1l, in which 57indicates the swinging bracket carrying the adjustable boringspindle, which in this case is the only boringspindle of the head, the saddle itself having no spindle; 58, a short vertical spindle journaled in the saddle in the vertical plane of theaxis of the driving-shaft and in the center of oscillation of bracket 57 and driven from the driving-shaft through one of bevel-gears 7 thereon; 59, the boring-spindle of this head, jonrnaled in bracket 57 and directly to shaft 58; 60, the two pinions connecting shaft 5S and spindle 59, and 61 acombined bearing projecting j pivot and clamping bolt uniting bracket 57 `S" with its saddle and serving to clamp the bracket in adjusted position. As this head carries but a single boring-spindle, the gearing driving it is direct-that is to say, there is no intermediate pinion between the boringspindle and its mating vertical shaft.

Boring-head 9 will be understood from Figs. 1, 6, and 7, in which 62 indicates a multiple forward from the base of the saddle and having a number of vertical bearings for boring-spindles; 63, a pair of vertical shafts journaled in the saddle in the vertical plane of the driving-shaft and driven therefrom by acouple of the bevel-gears splined thereon, these two shafts not being boring-spindles, but terminating in bearings in the multiple bearing-piece 62; 64, the boring-spindles journaled in the multiple bearn geared `boring-spindles divided intotwo groups of ve each, each group to be driven by one of the shafts 63; 65, intermediate pinions hav ing spindles journaled in the multiple bearing 62; 66, the spindles of these intermediate pinions, these spindles having no Acollars at their lower ends; 67, pinions on the two shafts 63 in a horizontal plane of the intermediate pinions, and 68 the pinions on the upper ends of the boring-spindles 64. Each of shafts 63 drives two of the spindles 64 by di rect gearing and drives the remaining three of its group of spindles through the intermediate pinions. The driving ofthe entire lot of ten bearing-spindles is thus divided i between two of the bevel-gears upon the driv` intermediate pinions 65 out of the multiple bearing some of the boring-spindles in each group may be thrown out of action, and the arrangement illustrated is obviously such that, considering the lot of ten spindles, all may be in use, or five of them may be thrown out of use by disconnecting one of the bevelgears, or one or more of the spindles in each ofthe groups of five may be thrown out of use by removing the appropriate intermedi-A ate pinions.

It will be observed that the construction of the machine is such that either one or a plurality of the boring-heads may be employedthat is to say, any given boring-head may be removed from the rail and another substituted. Some of the spindles or shafts of the boring-heads to which the motion is imparted from the splined shaft require to be driven in one Vdirection and some in another in orderto get the proper direction of motion for the bits,and the bevel-gears 7 upon the splined shaft may be arranged to produce the desired direction of motion; but to reverse these bevei-gears on the splined shaft requires the removal of the shaft from its bearings, an undesirable procedure when one boring-head is substituted for another upon the rail. Thus a boring-head may be removed from the rail and another substituted which would not receive the proper direction of motion from the bevel-gear upon the splined shaft; but the splined shaft is provided with pulleys at each end and may thus be arranged to be driven by an open belt at one end and4 a crossed belt at the other end, thus providing for either direction of motion for the splined shaft.`

Again, the machine may give employment to a single boring-spindle requiring little power IOO IIO

splined shaft. In practice the overhead shafti ing from which these machines receive their vmotion is arranged with pulleys by which motion can be put to the splined shaft in either direction of rotation or any one direction of rotation with the power due to a doubl'e belt.

I claim as my inventionl. In a variety boring-machine, the combi- Ination, substantially as set forth, ofa colboring-heads, bevel gears adjustably splined to the shaft and adapted to engage the bevelgears of the boring-spindles, whereby the appropriate gear on the shaft may be brought into engagement with a boring-spindle gear to drive it in a predetermined direction, a support above the rail, and thrust-bearings adjustably secured to said support and er1- gaging the hubs of the bevel-gears.

3. The combination of a standard, a rail carried thereby, a boring-head adjustable upon the rail, a spindle carried in the head, a driveshaft parallel with the rail, a driving connection for the spindle rotating with and adjustable upon the drive-shaft, a support alongside the drive-shaft, and a thrust-bearing adjustably secured to said support and engaging the driving connection upon the driveshaft.

4. In a variety boring-machine, the-combination, substantially as set forth, of a col- 'raamt umn, a feed-table supported thereby, a rail supported by the table, a driving-shaft supported above and forward of the rail, a saddle mounted for adjustment along the rail, a boring-spindle journaled in the saddle, a bevel-gear on the upper end of the boringspindle, a bevel-gear splined on the drivingshaft and having a circumferentially-grooved hub, a rod supported by the rail parallel with the driving-shaft, and a thrustbearing adjustably secured to the rod and engaging the groove of the bevel-pinion.

5. In a variety boring-machine, the combination, substantially as set forth, of a column, a feed-table mounted thereon, a rail supported by the column, a saddle mounted on the rail, a vertical shaft journaled in the saddle, a driving-shaft carried by the rail and bevel-geared to said'vertical shaft, a multiple bearing at the base of the saddle, a group of boring-spindles mounted in said multiple bearing, a pinion upon said vertical shaft, pinions upon said boring-spindles, intermediate pinions engaging the pinions of the boring-spindles, and spindles for said intermediate gears journaled in said multiple bearing and upwardly removable therefrom with their pinions.-

6. The combination of a standard, a rail carried thereby, a boring-head adjustable upon the rail, a spindle carried in the head provided with a bevel-gear, a drive-shaft alongside the rail, a bevel-gear rotating with and adjustable upon the drive-shaft, a support alongside the drive-shaft, and a thrust-bearing adjustably secured to said support and engaging said bevel-gear upon the driveshaft.

MOSES L. ANDREW. Witnesses:

J. W. SEE, E. R. SHIPLEY. 

